/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package gxpage

// Pager is the abstraction for pagination usage.
type Pager interface {

	// GetOffset will return the offset
	GetOffset() int

	// GetPageSize will return the page size
	GetPageSize() int

	// GetTotalPages will return the number of total pages
	GetTotalPages() int

	// GetData will return the data
	GetData() []interface{}

	// GetDataSize will return the size of data.
	// Usually it's len(GetData())
	GetDataSize() int

	// HasNext will return whether has next page
	HasNext() bool

	// HasData will return whether this page has data.
	HasData() bool
}
